Bloodborne Wiki Guide

Arianna

The NPC Arianna is found in a dark alley in Cathedral Ward. Her door is across from the Skeptical Man window. If you speak to her, you can tell her a safe place to go. If you wish her to live, send her to the Chapel.

Once she is there, you can obtain her blood. Be mindful of who else is around though. If you also saved the Nun Adella, then she will get mad at you for using her blood, and if you continue to use it, she will kill Arianna.